Toxicity and Field Efficacy of Six Insecticides on Alfalfa Thrips (Thysanoptera: Thripidae)  

作　　者：Lan LUO Hong JIANG Zhonglin YUAN 

机构地区：[1]College of Plant Health and Medicine,Qingdao Agricultural University,Qingdao 266109,China [2]Nanjing Office of Zhongbao Group,Beijing Zhongbao Lvnong Technology Group Co.,Ltd.,Nanjing 211100,China

出　　处：《Agricultural Biotechnology》2021年第2期75-77,共3页农业生物技术（英文版）

基　　金：Shandong Provincial Modern Agricultural Industry Technology System Forage Innovation Team(SDAIT-23-01).

摘　　要：Alfalfa thrips,especially the bird s-foot trefoil thrips(Odontothrips loti Haliday),is a major pest in the alfalfa field.Toxicity and field efficacy of 6 insecticides were determined by leaf disk in tube method and foliar spray,respectively.The results showed LC 50 values of chlorfenapyr 24%SC,lambda-cyhalothrin 5%EW,sulfoxaflor 22%SC,dinotefuran 20%SG,spinetoram 60 g/L SC and tolfenpyrad 30%SC to Odontothrips loti were 0.11,0.62,2.92,4.24,10.47 and 13.42 mg/L,respectively.The control effects of tolfenpyrad 30%SC,spinetoram 60 g/L SC,sulfoxaflor 22%SC,lambda-cyhalothrin 5%EW and dinotefuran 20%SG against alfalfa thrips were more than 80%after 1 d treatment,showing good readily availability.The control of spinetoram 60 g/L SC and dinotefuran 20% SG was 74.63% and 75.65% after 7 d treatment,showing a long persistence effect respectively.Therefore,spinetoram 60 g/L SC and dinotefuran 20% SG can be used as the first option to control alfalfa thrips.

关 键 词：Alfalfa thrips INSECTICIDES TOXICITY Field efficacy 

分 类 号：S435.4[农业科学—农业昆虫与害虫防治]